patch 8.1.0140: recording into a register has focus events commit https://github.com/vim/vim/commit/972bfddc6b3f52ae0865ad8c0bf6089bc8a9883a Author: Bram Moolenaar <Bram@vim.org> Date: Tue Jul 3 14:48:15 2018 +0200 patch 8.1.0140: recording into a register has focus events Problem: Recording into a register has focus events. (Michael Naumann) Solution: Don't record K_FOCUSGAINED and K_FOCUSLOST. (closes https://github.com/vim/vim/issues/3143)

" Vim filetype plugin
" Language:	Dockerfile
" Maintainer:   Honza Pokorny <http://honza.ca>
" Last Change:	2014 Aug 29

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif

" Don't load another plugin for this buffer
let b:did_ftplugin = 1

let b:undo_ftplugin = "setl commentstring<"

setlocal commentstring=#\ %s